Knee high with moderate graduated compression is designed to prevent venous disorders such as varicose/spider veins and ankle/foot swelling by increasing circulation in the legs. Activa brand. Non-returnable once opened.. Great Feeling Legs!Designed to prevent venous disorders of the leg such as varicose/spider veins and ankle/foot swelling. Provides moderate graduated compression to increase circulation in the legs. Ideal for frequent or long air travel to prevent "Economy Class Syndrome". a condition causing blood clots and embolism formation due to inactivity during flying.Knitted with Microfibers. this hosiery has a cotton-like softness that wicks moisture away. Elegant in its sheen and softness. Relieves leg fatigue and heaviness. ankle and foot swelling. mild spider and varicose veins. and for Post Sclerotherapy. Knee High length for both Men and Women. Non-binding top band and comfort balloon toe. Colors: Barely Beige. Black. 3XL and 4XL only available in Beige. Soft Fit from Activa brand.